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<?php include("includes/db_config.php"); 
if (isset($_POST['submit'])){
extract($_POST);
date_default_timezone_set('Asia/Kolkata');
$date = date('Y-m-d H:i:s');
$tmp_file = $_FILES['image']['tmp_name'];
$ext = pathinfo($_FILES["image"]["name"], PATHINFO_EXTENSION);
$rand = md5(uniqid().rand());
$img = $rand.".".$ext;
move_uploaded_file($tmp_file,"images/".$img);
$tmp_file = $_FILES['banner']['tmp_name'];
$ext = pathinfo($_FILES["banner"]["name"], PATHINFO_EXTENSION);
$rand = md5(uniqid().rand());
$bn = $rand.".".$ext;
move_uploaded_file($tmp_file,"images/banner/".$bn);
$sqlct=mysqli_fetch_array(mysqli_query($conn,"SELECT * from category where id='$category_id'"));
//$sqlsct=mysqli_fetch_array(mysqli_query($conn,"SELECT * from sub_category where id='$sub_category_id'"));
$category_page = strtolower(str_replace(" ", "-", $sqlct["curl"]));
//$sub_category_page = strtolower(str_replace(" ", "-", $sqlsct['sub_name'])); 
$service_title = strtolower(str_replace(" ", "-", $serv_title));
$details = htmlentities( $_POST['details']);
$detail=mysqli_real_escape_string($conn,$details);
$title=mysqli_real_escape_string($conn,$title);
if(file_exists('../'.$category_page)){
  if(!file_exists('../'.$category_page.'/'.$service_title)){
    if(copy('../service-details.php', '../'.$category_page.'/'.$service_title.'.php')) {
    $sql="INSERT into service_detail(cat_id,service_title,desp,image,banner,title,meta_keyword,created_date) values ('$category_id','$serv_title','$detail','$img','$bn','$title','$meta_key','$date')";
        if(mysqli_query($conn, $sql)){
        $last_id= mysqli_insert_id($conn);
            if(count($_FILES['simage']['name']) > 0)  {
                for($i = 0; $i < count($_FILES['simage']['name']); $i++){
                    $tmp_file = $_FILES['simage']['tmp_name'][$i];
                    $ext = pathinfo($_FILES["simage"]["name"][$i], PATHINFO_EXTENSION);
                    $rand = md5(uniqid().rand());
                    $upd_image = $rand.".".$ext;
                    move_uploaded_file($tmp_file,"images/service/".$upd_image);
                $sql_prd="INSERT into service_img(service_id,service_image) values ('$last_id','$upd_image')";
                $prd_res=mysqli_query($conn, $sql_prd) or die(mysqli_error());
                }
            }
           echo "<script>alert('Your service have added successfully!!!'); 
                location.replace('service-details.php');
            </script>";
            } else {
                    echo "  <script> 
                                alert('There are some problem please try again!!!'); 
                                location.replace('add-services.php');
                            </script>";
                }
            } 
            else {
                echo "  <script> 
                            alert('There are some problem please try again!!!'); 
                            location.replace('add-services.php');
                        </script>";
            }
        }
        else{
            echo "  <script> 
                        alert('Service aleady exists, please change the and try again!!!'); 
                        location.replace('add-services.php');
                    </script>";
        }
    }
    else{
        echo "  <script> 
                    alert('Service not exists, please check and try again!!!'); 
                    location.replace('services-details.php');
                </script>";
    }
}
?>
<?php include("includes/css.php")?>

<body class="hold-transition skin-blue sidebar-mini">
    <div class="wrapper">
        <?php include("includes/header.php")?>
        <?php include("includes/sidebar.php")?>
        
        <div class="content-wrapper">
            
            
            <section class="content">
                <div class="row">
                    <div class="col-md-12">
                        <div class="box box-primary">
                            <div class="box-header with-border">
                                <h3 class="box-title">Add Service Detail</h3>
                            </div>
                            
                            <div class="box-body">
                                <form method="POST" action="" enctype="multipart/form-data">
                                     <div class="form-group">
                                        <div class="col-md-6">
                                            <label>Category:</label>
                                            <div class="input-group">
                                                <div class="input-group-addon">
                                                    <i class="fa fa-suitcase"></i>
                                                </div>
                                                    <select name="category_id" id="cat_id" class="form-control">
                                                <option>Select</option>
                                                 <?php
                                                    $sql2="SELECT * from category";
                                                    $exe2=mysqli_query($conn,$sql2);
                                                    while ($res2=mysqli_fetch_array($exe2))
                                                    {
                                                    ?>
                                                    <option value="<?php echo $res2['id']; ?>"><?php echo $res2['name'];?></option>
                                                    <?php
                                                    }
                                                    ?>
                                            </select>
                                            </div>
                                        </div>
                                        
                                     	<div class="col-md-6">
                                            <label>Service Title</label>
                                            <div class="input-group">
                                                <div class="input-group-addon">
                                                    <i class="fa fa-suitcase"></i>
                                                </div>
                                                <input type="text" name="serv_title" class="form-control" placeholder="Enter Title">
                                            </div>
                                        </div>
                                        <div class="col-md-6">
                                            <label>Service Images(Multiple Select Option)</label>
                                            <div class="input-group">
                                                <div class="input-group-addon">
                                                    <i class="fa fa-suitcase"></i>
                                                </div>
                                                <input type="file" name="simage[]" multiple class="form-control" >
                                            </div>
                                        </div>
                                        
                                        <div class="col-md-6">
                                            <label> Image:(Size: 433px X 280px ) </label>
                                            <div class="input-group">
                                                <div class="input-group-addon">
                                                    <i class="fa fa-suitcase"></i>
                                                </div>
                                                <input type="file" name="image" class="form-control">
                                            </div>  
                                        </div>
                                        <div class="col-md-6">
                                            <label> Banner:(Size: 1600px X 400px ) </label>
                                            <div class="input-group">
                                                <div class="input-group-addon">
                                                    <i class="fa fa-suitcase"></i>
                                                </div>
                                                <input type="file" name="banner" class="form-control">
                                            </div>  
                                        </div>
                                        <div class="col-md-12">
                                            <label>Title</label>
                                            <div class="input-group">
                                                <div class="input-group-addon">
                                                    <i class="fa fa-suitcase"></i>
                                                </div>
                                                <input type="text" name="title" class="form-control" placeholder="Enter T itle">
                                            </div>
                                       </div>
                                        <div class="col-md-12">
                                            <label>Meta Keyword</label>
                                            <div class="input-group">
                                                <div class="input-group-addon">
                                                    <i class="fa fa-suitcase"></i>
                                                </div>
                                                  <textarea name="meta_key" id="summernote2" class="form-control" style="height:130px"></textarea>
                                            </div>
                                        </div>
                                        
                                       <div class="col-md-12">
                                            <label>Description :</label>
                                            <div class="input-group">
                                                <div class="input-group-addon">
                                                    <i class="fa fa-suitcase"></i>
                                                </div>
                                                <textarea name="details" id="summernote" style="height:400px"> </textarea>
                                            </div>
                                        </div> 
                                        <div class="col-md-12 mt-40 mb-10">
                                            <button type="submit" name="submit" class="btn btn-primary pt-10 pb-10 float-right">Add Data</button>
                                        </div>
                                    </div>
                                </form>
                            </div>
                        </div>
                    </div>
                </div>
            </section>
        </div>
        <?php include("includes/footer.php")?>
    </div>
    <?php include("includes/js.php")?>
</body>
<script type="text/javascript">
    $(document).ready(function(){
    $('#cat_id').on('change', function(){
        var cat_id = $(this).val();
       // alert(cat_id);
        if(cat_id){
            $.ajax({
                type:'POST',
                url:'ajax_get_subsub_cat.php',
                data:'cat_id='+cat_id,
                success:function(html){
                    $('#sub_cat').html(html);
                   // console.log(html);
                   // $('#city').html('<option value="">Select Division</option>'); 
                }
            }); 
        }
    });
$('#sub_cat').on('change', function(){
    var scat_id = $(this).val();
    if(scat_id){
        $.ajax({
            type:'POST',
            url:'ajax_get_subsub_cat.php',
            data:'scat_id='+scat_id,
            success:function(html){
                $('#subsub_cat').html(html);
               // console.log(html);
               // $('#city').html('<option value="">Select Division</option>'); 
            }
        }); 
    }
 });
});
</script>

</script>
</html>

Editing File: add_services.php